While Vaillants do with the products developed by Quincy beach sailors testing in the desert, a benefit rodeo takes place in the artificial western town Tumbleweed to the Pops, Julie and Frank are invited as special guests. In the general commotion, the three cowboys do not fall on, the slow stroll to the ticket sales booth. The trio steals unnoticed the entire proceeds of the event and makes his escape. The Vaillant take with Sheriff O'Toole chase, where Steve and Michel to the beach sailors at an advantage are enormous ... (information from the German series "Michel Vaillant")
